مُسْتَبٌّ

[act. and pass. particle n. of 8]. It is said in a tradition, المُسْتَبَّانِ شَيْطَانَانِ (A, TA) The two mutual revilers are two devils. (El-Munáwee in his Expos. of the Jámi' es-Sagheer of EsSuyootee.)